Writing and drawing pad



20, y HAHN 1,891,414

WRITING AND DRAWING PAD Filed July 2. 1928 2 Sheets-Sheet 1 Dec. 2o, 1932, H. HAHN 1,891,414

WRITING AND DRAWING PAD Filed July 2, 1928 2 Sheets-Sheet 2 a, figa.

M590 j/QUZ ".Pada' PATENT- 'OFFICE f IIU'Go HAHN, orv CHARLOTTENBURG. NEAR BERLIN, GERMANY,. AssreNo'R rro rnINrAfron G. M. B. rc, vor BERLIN, GERMANY,

WRITING AND .Application led lluly J2', 19`28, Serial No My Invention' relates to 4Improvements 1n writnig and drawing pads, andmore spec-ifi' `lcally tojsucha pad in which above a dark colored foundation plate provided with an aadhesive layerysuch as wai, paraffin or the like there is arranged a transparent sheet of p aper adapted to be lifted off andv above this -sheet a transparent protective layer of a? durable material. My invention is particularly locharacterizedby the fact that the' detachment -o f the adhesivev layer from the sheetof paper'is effected by depressing a buttonV or knobwhich lifts the adhesive layer off the sheet of paper. According tomy invention 15 the framecarrying the adhesive layer as well vasthe frame carrying the sheet of papervarel easily'iexchangeable Both frames are ac- .'cording Ato my invention controlled vby springs Which-forcey them against-the pro- Y aoltective-laye'r' consisting of-durable material'.

The spindle carrying the springs 'is detachably guided in rotatable bearings, the ,springs acting directly-upon thev frame carrying the adhesive layer 'and forcing the bearing parts '25'by means of bent noses against theframe carry-ing the sheet` of pap'er. 'My invention Aiscombinedl with a permanent calendar of any suitablefdesign. The `calendar mayf0r instance', 'consistbf a box'or case provided '30 in front with` a window through which cards are visible,A which indicate the year, the4 month,7the daysof the week and the dates-` of the latter, a transparentstrip being mov# able infront of the cardvisible for the timev 35 being, which strip is provided with windows,

. longitudinal -openings or the 'like-to indicate the date of the day. Instead of such a permanent calendar,"a calendar with manually movable cards or cards movable or rotatable 40 in' any lotheimanne'r. may be combined withmyimprove'd writing .or drawing pad. A

` emb diment of'my `invention is illus- -trated in the`drawiiigs afliXed' hereto and l forming part'of my'invention: Q- Int-he drawings is:v

- Fig; l, a'perspectiive view of my improved g. Q, an inverted plan,

Fig.- 3,- a Isection 'along line 3v t -S of Fig. 2, 'r- 50l Fig-4, a section along line 4 4 of Fig. 3,

Fig. 7, a side-elevation a bearing for the. spindle carrying the springs. y 1

F ig.8 is/a View of the transparent strip. 55-

Figure'9 is an enlargedtransverse section, Aparts broken Yaway. to clearly illustrate the details of construction.

y Like parts are indicatedbyi like. numerals Against it is forced a sheet of paper 6 lo- 70' cated upon a frame 5. Against the sheet of paper 6 is pressed an adhesive layer 7 fixed to the frame 8. i

The two frames 5 and 6 arey held 'at one end against each other and the under side 75 f of the top of the casing l by projections 22 extended inwardly from one-end wall of the casing.- The projectionsserve to holdthe frames inproper relation one to theother and ting av slight swinging movement of one, of the frames. .At the end opposite the projec- -vtions 22 the side walls of the casing are provided with bearing strips ll'pivotally connected to theside walls at ll', the upper ends of the'bearing strips having lateral ears 12 Y i and their lowerends, lateral ears 12 formed to provide half bea-rings 13. The shaft 10, is

supported in these half bearings' extending 90( transverse the casing 1 andvbeing,ii1 the absence of the spring holding means to be 'de scribed, freely movable upwardly relative to thestrips. Springs `9 are coiled about the l shaft 1-0 near-the ends thereof, the springs .95

being preferably formedof a loop section underlying and bearing against the bottom of the frame 8,' each arm of the looplbein'g coiled about the shaft andthe terminals of the coiis '.beingpextended t-oloearl against theunder side 10Q Fig. 5, a section along line 5-5 of Fig. 3,

.of reference throughout all the-figures of the 60 v to the casing while at theksame time permit- 30 l of the rear wall of the casing 1, as clearly shown in Fig. 9.' l

As applied, the ears 12 of the bearing strips 11 underlie the frame 5, as shown in Fig. 2, and as the springs 9 exert a downward pressure on the shaft 10, the bearing strips 11 are normally held on their pivots in a position to hold the frame 5 in contact with the under side of the top Wall of the casing 1. Furthermore, the loop portions of the springs 9 underlie the frame 8 to hold the latter normally in contact with the frame 5. Upon the end of the frame 8 adjacent the shaft 10 is secured a button 13 which projects through an opening in the top Wall 1 of the casing. Obviously, pressure upon the free end of the button 13 will depress the frame 8 with respect to the frame -5 Without permitting the latter to move. y

For the purpose of removing the adhesive, layer 7 or'the sheet of paper 6 the spindle 10 With the springs 9 is lifted out of its bearings 11 whereupon first the frame 8 with the adhesive layer 7 and the push button 13 and then the frame 5 with the sheet of can be easily withdrawn.

With the improved Writing and drawing pad or desk is firmly or detachably combined a permanent calendar of any suitable design or construction. In the case illustrated by Way of example it consistsof a box 14 in which are accommodated loose cards 15 upon which are inscribed the. year, the month, the days of the week and the dates of the latter. In front of any card which may be exposed and which appears in a window 16 of the front Wall 17 there is located a pane of glass 18. Between the visible card and the glass there is adapted to be moved in one direction or the other by the aid of the studs 19 a trans-- parent strip 20, which renders a particular date clearly visible and .at the same time materially detracts from the visibility of the other dates. In the embodiment illustrated the transparent strip 20 is, as far as it covers the dates opaque or -colored and provided with highly transparent Windows 21. In this Way the correct date of the day becomes visible from some distance, -While the remaining figures are still sufficiently Visible to determine the date of any desired day of the Week.

Various modifications and changes may be made Without departing from the spirit and the Scope of the invention, and I desire, therefore, that only such limitations shall be placed thereon as are imposed by the prior art.

I claim as my invention:

1. A Writing pad including a casing having a top Wall formed with an opening, a plurality of elements underlying the opening and including an element presenting a dark adhesive face, an immediately superimposed element of transparent paper and a further superimposed element of a flexible transparpaper 6 ent material, means for normally holding alll of said elements in contact, and means for" moving the element with the dark adhesive surface in a direction away from the transparent paper.

2. Awriting pad including a casing having the upper wall formed with an opening, a plurality of frames supported .in the casing and immediately underlying the opening, one of the frames carryinga sheetof transparent paper and a sheet of flexible transparent material overlying the paper, the other of said frames 'carrying a section presenting an adhesive face of dark 4color immediately beneath the transparent paper, and means for swinging the latter frame away from the first mentioned frame.

3. In a Writing pad, aeasing having the top wall formed with an opening, a frame nnderlying the opening and carrying asl'ieet of transparent paper and a superimposed sheet of flexible transparent material, the. frame. being arranged to cause said transparent material to beaccessible through lthe opening in the casing, a second frame underlying the first mentioned frame and presenting ascetion of a darkened adhesivesurface to under-v lie the paper of the first frame, a spring means for holding the second frame in contact with the first mentioned frame, and means `for moving the second frame relative to the first mentioned frame against the tension of the lspring means.

Il. A Writing pad lncludmg a casing having the top thereof formed with an opening, a frame arranged Within the casing, projections on the casing for supporting one end of the frame, bearing strips pivotally connected to the frame for supporting the opposite end of the frame, a shaft mounted in said bearing' strips, a second frame underlying the first frame and held at oneendby said projections, springs carried by the shaftand bearing against the second frame, said springs acting through the bearing strips to hold the first mentioned frame in contactwith the under surface of the casing, means carried,

the second frame relative to the first to cause said marking impression to disappear.

5. Writing pad including a casing having the top Wall thereof formed with an opening, a frame arranged in the casing and held at one end against separation froml the easing, bearing strips carried by the casing to hold the opposite end of the frame in conta et with the underside of the top W'all of the easing, a transparent sheet of paper, a superimposed transparent sheet of flexible material held by said frame in contact with the under side of the top Wall of the casing and in position to bridge the opening therein, a see ond frame-movably held at one end with respect to the casing and underlying the first l'lll frame, spring means for holding the second rame in contact with the first frame, an' imtransparent sheet of flexible material held by said frame in contact with the under side of the top wall of the casing and in position to bridge the opening therein, ,a second frame movably held at one end with respect to the casing and underlying the first frame, spring means Jfor holding the second frame in contact with the first frame, an impression section carried by the second frame having 'a dark adhesive surface, and a button carried by the second frame and extending through the top wall of the casing to permit the second frame .to be depressed relativeto the first mentioned frame against the tension of said spring means.

7 A device of the class described, comprising in combination, acasing, a base member mountedin said casing, a layer of tissue material supported on said casing, whereby pressure upon said la'yer by. a pointed instrument, causes said layer to adhere to said base to show the path of said instrument, a spring in said casing normally pressing said base member against said layer, and means carried in said casing by which to facilitate separating said layer and said base.

8. A device of the class described comprising in combination, a casing, a supporting member pivotally mounted in said casing, a base member carried by said supporting member, a. spring support for said supportrom said rst mentioned means to obliterate said display.

10. A device of the lkind described comprisi ing a casing, having an apertured top cover,

a base 4member movably mounted in said' casing adapted to normally lie` adjacent said top cover, spring means within ^said casing supporting said'. base member against said cover,a layer of tissue material supported on said casing over said base member whereby pressure upon said layer by a pointed inlstrument causes said layer to adhere to said base to display the path of said instrument, and a device for separating said layer and base to thereby obliterate said display.

11. A memorandum pad comprising a rectangular casing provided' with an inclined top wall and a removable bottom wall, said top wall having a window opening. therein, 'a frame member within said casing,'a glossy transparent sheet supported by said frame said frame member and disposed beneath said transparent sheet, a plate loosely mounted in said casing, a wax'coating on the top side of said plate, springs interposed between said plate and said bottom wall for urging said plate toward said top wall to cause the waxed ,member, a softtissue sheet also carried by ingmember within sald casing means coo *Y erating with said base member to display path made by a pointed instrument, and` member pivotally mounted in said casing at one end thereof, a spring within said casin resiliently supporting the other end of sai supporting member, a base member carried by l sai supporting member, means cooperating with said'base member to display the path made by a pointed instrument, and means to facilitate moving said supporting member and the base member carried thereby away 

